WO2020111607A1 - Aerosol generation article - Google Patents

Abstract

An aerosol generation article according to one embodiment comprises: a medium part; a first hollow tube which is disposed to face the downstream end portion of the medium part and which includes a first hollow portion; a cooling part including a cooling element and a second hollow tube which is disposed to be connected to the downstream side of the first hollow tube and which includes a second hollow portion having a diameter greater than or equal to the diameter of the first hollow portion; a filter part disposed to face the downstream end portion of the cooling part; and a wrapper for wrapping at least a portion from among the medium part, the first hollow tube, the cooling part and the filter part.

Description

Aerosol-generating articles

It relates to an aerosol-generating article, and more particularly, to an aerosol-generating article comprising a cooling element comprising a cooling element and a hollow tube.

In recent years, there is an increasing demand for alternative methods to overcome the shortcomings of common aerosol-generating articles. For example, there is an increasing demand for aerosol-generating articles as the aerosol-generating material in the aerosol-generating article is heated, rather than by burning the aerosol-generating article to produce an aerosol. Accordingly, research into a heated aerosol-generating article or a heated aerosol-generating device has been actively conducted.

The aerosol-generating article can include a cooling element for cooling the aerosol to below a certain temperature. The cooling element has the advantage of allowing the user to safely inhale the aerosol, but also has the disadvantage of increasing the cost of the aerosol-generating article due to the high manufacturing cost. Accordingly, research is being conducted to reduce the cost while maintaining the cooling function of the aerosol-generating article.

It is intended to provide an aerosol-generating article capable of reducing cost while maintaining a cooling function. The technical problem to be solved is not limited to the technical problem as described above, and other technical problems may exist.

An aerosol-generating article according to an embodiment includes a medium portion; A first hollow tube disposed to face the downstream end of the medium and including a first hollow; A cooling unit disposed next to the downstream side of the first hollow tube, the second hollow tube including a second hollow having a diameter equal to or greater than the diameter of the first hollow, and a cooling element; A filter unit disposed toward the downstream end of the cooling unit; And a wrapper surrounding at least a portion of the medium portion, the first hollow tube, the cooling portion, and the filter portion.

The manufacturing cost can be reduced while maintaining the aerosol component delivery function and the cooling function of the aerosol-generating article. The effects of the invention are not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a view showing an example in which an aerosol-generating article is inserted into the aerosol-generating device.

2-4 are diagrams illustrating examples of aerosol-generating articles.

An aerosol-generating article according to an embodiment includes a medium portion; A first hollow tube disposed to face the downstream end of the medium and including a first hollow; A cooling unit disposed next to the downstream side of the first hollow tube, the second hollow tube including a second hollow having a diameter equal to or greater than the diameter of the first hollow, and a cooling element; A filter unit disposed toward the downstream end of the cooling unit; And a wrapper surrounding at least a portion of the medium portion, the first hollow tube, the cooling portion, and the filter portion.

In the aerosol-generating article described above, the length of the second hollow tube is shorter than the length of the first hollow tube.

In the above-mentioned aerosol-generating article, the length of the second hollow tube and the length of the cooling element are each included within a range of 4 mm to 10 mm.

In the aerosol-generating article described above, the cooling element and the second hollow tube are each wrapped by a wrapper, and the wrapped cooling element and the second hollow tube are wrapped again by a single wrapper.

In the aerosol-generating article described above, the cooling element is wrapped by a wrapper, and the wrapped cooling element and the second hollow tube are wrapped by a single wrapper.

In the aerosol-generating article described above, the first hollow tube and the second hollow tube comprise cellulose acetate.

In the aerosol-generating article described above, the cooling element comprises polymer fibers.

In the above-mentioned aerosol-generating article, the cooling element and the second hollow tube are arranged in sequence from the upstream side to the downstream side.

The terminology used in the embodiments has been selected from general terms that are currently widely used as possible while considering functions in the present invention, but this may vary according to the intention or precedent of a person skilled in the art or the appearance of new technologies. In addition, in certain cases, some terms are arbitrarily selected by the applicant, and in this case, their meanings will be described in detail in the description of the applicable invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the contents of the present invention, not simply the names of the terms.

When a part of the specification "includes" a certain component, this means that other components may be further included instead of excluding other components, unless specifically stated to the contrary. In addition, terms such as “…unit” and “…module” described in the specification mean a unit that processes at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

In the following embodiments, the terms “upstream” and “downstream” means that when a user draws air using a smoking article, the portion from which air enters into the aerosol-generating article from the outside is “upstream” and inside the aerosol-generating article. The part where the air goes out is “downstream”. The terms “upstream” and “downstream” are terms used to indicate the relative position or orientation between the segments that make up the aerosol-generating article.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a view showing an example in which an aerosol-generating article is inserted into the aerosol-generating device.

Referring to FIG. 1, the aerosol-generating device 1 includes a battery 11, a control unit 12, and a heater 13. In addition, the aerosol-generating article 2 may be inserted into the interior space of the aerosol-generating device 1.

The aerosol-generating device 1 shown in FIG. 1 shows components related to the present embodiment. Therefore, it can be understood by those skilled in the art related to this embodiment that other general-purpose components in addition to those shown in FIG. 1 may be further included in the aerosol-generating device 1.

1, the battery 11, the control unit 12, and the heater 13 are shown as being arranged in a line, but are not limited thereto. In other words, according to the design of the aerosol-generating device 1, the arrangement of the battery 11, the controller 12, and the heater 13 may be changed.

When the aerosol-generating article 2 is inserted into the aerosol-generating device 1, the aerosol-generating device 1 heats the heater 13. The aerosol-generating material in the aerosol-generating article 2 is heated by the heated heater 13, and thus aerosol may be generated.

If necessary, the aerosol-generating device 1 can heat the heater 13 even when the aerosol-generating article 2 is not inserted into the aerosol-generating device 1.

The battery 11 supplies power used to operate the aerosol-generating device 1. For example, the battery 11 may supply power so that the heater 13 can be heated, and may supply power necessary for the control unit 12 to operate. In addition, the battery 11 may supply power required for the display, sensor, motor, and the like installed in the aerosol generating device 1 to operate.

The control unit 12 overall controls the operation of the aerosol-generating device 1. Specifically, the controller 12 controls the operation of the batteries 11 and the heater 13 as well as other components included in the aerosol-generating device 1. In addition, the control unit 12 may determine the state of each of the components of the aerosol-generating device 1 to determine whether the aerosol-generating device 1 is in an operable state.

The control unit 12 includes at least one processor. The processor may be implemented as an array of multiple logic gates, or a combination of a general-purpose microprocessor and a memory in which programs executable on the microprocessor are stored. In addition, those skilled in the art to which this embodiment belongs may understand that it may be implemented with other types of hardware.

The heater 13 is heated by electric power supplied from the battery 11. For example, when the aerosol-generating article is inserted into the aerosol-generating device 1, the heater 13 may be located inside the aerosol-generating article. Thus, the heated heater 13 can raise the temperature of the aerosol-generating material in the aerosol-generating article.

The heater 13 may be an electric resistive heater. For example, the heater 13 includes an electrically conductive track, and as the current flows through the electrically conductive track, the heater 13 may be heated. However, the heater 13 is not limited to the above-described example, and may be applied without limitation as long as it can be heated to a desired temperature. Here, the desired temperature may be preset in the aerosol-generating device 1, or may be set to a desired temperature by the user.

Meanwhile, as another example, the heater 13 may be an induction heater. Specifically, the heater 13 may include an electrically conductive coil for heating the aerosol-generating article in an induction heating method, and the aerosol-generating article may include a susceptor that can be heated by an induction heating heater.

1, the heater 13 is shown to be disposed to be inserted into the aerosol-generating article 2, but is not limited thereto. For example, the heater 13 may include a tubular heating element, a plate heating element, a needle heating element, or a rod heating element, depending on the shape of the heating element, the interior of the aerosol-generating article 2 or The outside can be heated.

In addition, a plurality of heaters 13 may be arranged in the aerosol-generating device 1. At this time, the plurality of heaters 13 may be arranged to be inserted into the aerosol-generating article 2 or may be disposed outside the aerosol-generating article 2. In addition, some of the plurality of heaters 13 may be arranged to be inserted into the aerosol-generating article 2, and the rest may be disposed outside the aerosol-generating article 2. In addition, the shape of the heater 13 is not limited to the shape shown in FIG. 1, and may be manufactured in various shapes.

Meanwhile, the aerosol-generating device 1 may further include general-purpose components in addition to the battery 11, the control unit 12, and the heater 13. For example, the aerosol-generating device 1 may include a display capable of outputting visual information and/or a motor for outputting tactile information. In addition, the aerosol-generating device 1 may include at least one sensor (puff sensing sensor, temperature sensing sensor, aerosol-generating article insertion sensing sensor, etc.).

In addition, the aerosol-generating device 1 may be manufactured in a structure in which external air may be introduced or internal gas may be discharged even when the aerosol-generating article 2 is inserted.

Although not shown in FIG. 1, the aerosol-generating device 1 can also be configured with a separate cradle. For example, the cradle can be used to charge the battery 11 of the aerosol-generating device 1. Alternatively, the heater 13 may be heated in a state where the cradle and the aerosol-generating device 1 are combined.

The aerosol-generating article 2 can be similar to a typical combustion-type aerosol-generating article. For example, the aerosol-generating article 2 can be divided into a first portion 21 comprising an aerosol-generating material and a second portion 22 including a filter or the like. Alternatively, the aerosol-generating material may also be included in the second portion 22 of the aerosol-generating article 2. For example, an aerosol-generating material made in the form of granules or capsules may be inserted into the second portion 22.

The entire first portion 21 may be inserted into the aerosol-generating device 1, and the second portion 22 may be exposed to the outside. Alternatively, only a portion of the first portion 21 may be inserted into the aerosol-generating device 1, or a portion of the first portion 21 and the second portion 22 may be inserted. The user can inhale the aerosol in the state where the second portion 22 is opened by mouth. At this time, the aerosol is generated by the external air passing through the first portion 21, and the generated aerosol passes through the second portion 22 and is delivered to the user's mouth.

As an example, external air may be introduced through at least one air passage formed in the aerosol-generating device 1. For example, the opening and closing of the air passage and/or the size of the air passage formed in the aerosol-generating device 1 may be adjusted by the user. Accordingly, the amount of atomization, smoking sensation, and the like can be adjusted by the user. As another example, external air may be introduced into the aerosol-generating article 2 through at least one hole formed on the surface of the aerosol-generating article 2.

Hereinafter, an example of an aerosol-generating article will be described with reference to FIGS. 2 and 3.

2 and 3 are views showing an example of an aerosol-generating article.

2 and 3, the aerosol-generating article 3 includes a medium portion 31, a first hollow tube 32, a cooling portion 33, and a filter portion 34. The first portion 21 described above with reference to FIG. 1 includes a medium portion 31, and the second portion 22 includes a first hollow tube 32, a cooling portion 33, and a filter portion 34 It includes.

The medium portion 31 contains an aerosol-generating material. For example, the aerosol-generating material may include, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. In addition, the medium portion 31 may contain other additives such as flavoring agents, wetting agents and/or organic acids. In addition, a flavoring liquid such as menthol or moisturizing agent can be added to the medium portion 31 by spraying the medium portion 31.

The medium portion 31 may be manufactured in various ways. For example, the medium portion 31 may be made of a sheet, or may be made of strands. In addition, the medium portion 31 may be made of cut tobacco, cut into cuts.

Also, the medium portion 31 may be surrounded by a heat conducting material. For example, the heat-conducting material may be a metal foil such as aluminum foil, but is not limited thereto. For example, the heat-conducting material surrounding the medium portion 31 may evenly disperse heat transferred to the medium portion 31 to improve the thermal conductivity applied to the medium portion, thereby improving the taste of tobacco. . In addition, the heat-conducting material surrounding the medium portion 31 may function as a susceptor heated by an induction heating heater. At this time, although not shown in the drawing, the medium portion 31 may further include an additional susceptor in addition to the heat conducting material surrounding the outside.

The first hollow tube 32 may be a cellulose acetate filter. The first hollow tube 32 may be a tube-shaped structure including the first hollow 371 therein. In other words, the first hollow tube 32 includes a first hollow 371 having a diameter D1, and the first hollow 371 may serve as a channel through which the aerosol passes. The length of the first hollow tube 32 may be an appropriate length within the range of 4mm to 30mm, but is not limited thereto. Preferably, the length of the first hollow tube 32 may be 10 mm, but is not limited thereto. The diameter D1 of the first hollow 371 may be an appropriate diameter within the range of 2 mm to 4.5 mm, but is not limited thereto. Preferably, the diameter (D1) of the first hollow tube 32 may be 3.4 mm, but is not limited thereto.

The cooling unit 33 cools the aerosol generated by the heater 13 heating the medium unit 31. The cooling unit 33 includes a cooling element 331 and a second hollow tube 332.

The length or diameter of the cooling unit 33 may be variously determined according to the shape of the aerosol-generating article 300. For example, the length of the cooling unit 33 may be suitably employed within the range of 7mm to 20mm. Preferably, the length of the cooling unit 33 may be about 14 mm, but is not limited thereto.

The cooling element 331 may cool the aerosol by a phase shift action. For example, the material forming the cooling element 331 may cause a phase change action such as melting or glass transition that requires absorption of thermal energy. As the endothermic reaction occurs at the temperature at which the aerosol enters the cooling element 331, the temperature of the aerosol passing through the cooling element 331 is lowered.

The length of the cooling element 331 can be suitably employed within the range of 4mm to 10mm. Preferably, the length of the cooling element 331 may be about 7mm, but is not limited thereto.

As an example, the cooling element 331 may be made of only a polymer material or a biodegradable polymer material. Here, the polymer material includes, but is not limited to, gelatin, polyethylene (PE), polypropylene (PP), polyurethane (PU), fluorinated ethylene propylene (FEP), and combinations thereof. In addition, biodegradable polymer materials include polylactic acid (PLA), polyhydroxybutyrate (PHB), cellulose acetate, poly-epsilon-caprolactone (PCL), polyglycolic acid (PGA), polyhydroxyalkanoate ( PHAs) and starch-based thermoplastic resins.

Specifically, the cooling element 331 can be made of pure polylactic acid only. For example, the cooling element 331 may be a three-dimensional structure shape produced by using one or more fiber strands (hereinafter referred to as'fiber strands') made of pure polylactic acid. Here, the thickness, length, number of fiber strands constituting the cooling element 331, and the shape of the fiber strands may vary. As the cooling element 331 is made of pure polylactic acid, a specific material can be prevented from being generated in the process of passing the aerosol through the cooling element 331.

The second hollow tube 332 may be a cellulose acetate filter. The second hollow tube 332 may be a tube-shaped structure including the second hollow 372 therein. In other words, the second hollow tube 332 includes a second hollow 372 having a diameter D2, and the second hollow 372 can serve as a channel through which the aerosol passes.

The length of the second hollow tube 332 may be an appropriate length within the range of 4mm to 10mm, but is not limited thereto. Preferably, the length of the second hollow tube 332 may be about 7 mm, but is not limited thereto. For example, the length of the second hollow tube 332 may be shorter than the first hollow tube 331, but is not limited thereto. For another example, the length of the second hollow tube 332 may be shorter than or equal to the length of the cooling element 331, but is not limited thereto.

The diameter (D2) of the second hollow 372 may be an appropriate diameter within the range of 3mm to 5mm, but is not limited thereto. Preferably, the diameter (D2) of the second hollow tube 332 may be 4 mm, but is not limited thereto. More preferably, the diameter (D2) of the second hollow tube 332 may be the same or larger than the diameter (D1) of the first hollow tube 331, but is not limited thereto. That is, the ratio of the diameter D2 of the second hollow tube 332 to the diameter D1 of the first hollow tube 331 may be 1.0 or more, but is not limited thereto.

The filter portion 34 is disposed at a rear end portion that contacts the user's mouth when smoking. The length of the filter portion 34 can be suitably employed within a range of 4 mm to 20 mm. For example, the length of the filter unit 34 may be about 12 mm, but is not limited thereto.

In the process of manufacturing the filter unit 34, the flavor may be produced by spraying a fragrance liquid to the filter unit 34. Alternatively, a separate fiber coated with a fragrance liquid may be inserted into the filter unit 34. The aerosol generated in the medium 31 is cooled as it passes through the cooling unit 33, and the cooled aerosol is delivered to the user through the filter unit 34. Accordingly, when a flavoring element is added to the filter unit 34, an effect of enhancing the persistence of flavor delivered to the user may be generated.

Also, the filter unit 34 may include at least one capsule 35. Here, the capsule 35 may be a structure in which a content liquid containing a fragrance is wrapped with a film. For example, the capsule 35 may have a spherical or cylindrical shape.

The aerosol-generating article 3 can be packaged by at least one wrapper 36. The wrapper 36 may have at least one hole through which external air flows or internal gas flows out. As an example, the aerosol-generating article 3 can be packaged by a single wrapper 36. As another example, the aerosol-generating article 3 may be packaged overlapping by two or more wrappers 36.

For example, the medium portion 31 is packaged by the first wrapper 361, the first hollow tube 32 is packaged by the second wrapper 362, and the cooling element is provided by the third wrapper 363. 331 is packaged, the second hollow tube 332 is packaged by the fourth wrapper 364, and the filter unit 34 can be packaged by the sixth wrapper 366. The cooling element 331 and the second hollow tube 332 packaged by individual wrappers may be repackaged by the fifth wrapper 365. The cooling element 331 and the second hollow tube 332 packaged by the individual wrappers are not necessarily repackaged by the fifth wrapper 365, and may not be repackaged by the fifth wrapper 365. In addition, the medium portion 31, the first hollow tube 32, the cooling element 331, the second hollow tube 332, and the filter portion 34 are combined, and an aerosol is generated by the seventh wrapper 367. The entire article 3 can be repackaged.

For another example, the medium portion 31 is packaged by the first wrapper 361, the first hollow tube 32 is packaged by the second wrapper 362, and cooled by the third wrapper 363. The element 331 is packaged, and the filter portion 34 can be packaged by a sixth wrapper 366. The cooling element 331 packaged by the individual wrappers and the second hollow tube 332 not packaged by the individual wrappers may be packaged by the fifth wrapper 365. The cooling element 331 and the second hollow tube 332 are not necessarily packaged by the fifth wrapper 365, and may not be packaged by the fifth wrapper 365. In addition, the medium portion 31, the first hollow tube 32, the cooling element 331, the second hollow tube 332, and the filter portion 34 are combined, and an aerosol is generated by the seventh wrapper 367. The entire article 3 can be repackaged.

As such, the cooling portion 33 of the aerosol-generating article 3 includes a cooling element 331 and a second hollow tube 332. That is, the total length of the cooling unit 33 is equal to the sum of the length of the cooling element 331 and the second hollow tube 332. In general, since the manufacturing cost of the cooling element 331 is higher than that of the second hollow tube 332, the longer the length of the cooling element 331 occupies in the entire length of the cooling unit 33, the more aerosol-generating article ( The manufacturing cost of 3) may increase. In order to reduce the cost of the aerosol-generating article 3, a short length cooling element 331 may be used, but the use of a cooling element 331 of too short length may degrade the aerosol cooling function of the cooling unit 33. Therefore, a cooling element 331 of an appropriate length should be used.

In addition, as the aerosol generated in the medium portion 31 is cooled in the cooling portion 33, the particle size increases. As the diameter D2 of the second hollow 372 decreases, the probability that the aerosol having a larger particle size collides with the second hollow tube 332 increases. As the aerosol collides with the second hollow tube 332, some components are absorbed by the second hollow tube 332, and the aerosol generated in the medium 31 may not be sufficiently delivered to the user. A second hollow tube 332 with a hollow 372 should be used.

Table 1 is a table comparing the components and temperature of the aerosol discharged from the aerosol-generating article 3 according to one experimental example. The total length of the cooling unit 33 used in one experimental example is 14 mm, and the inner diameter D1 of the first hollow tube 32 is 3.4 mm. When the cooling unit 33 is composed of only the cooling element 331, and when the cooling unit 33 is composed of a cooling element 331 having a length of 7 mm and a second hollow tube 332 having a length of 7 mm and an inner diameter (D2) of 4 mm. The experiment was performed on.

	Ingredient of aerosol (mg)				Temperature of aerosol (℃)
	TPM*	Nicotine	Glycerin	Moisture	Maximum temperature	Average temperature
Cooling element length 14mm	45.08	0.96	3.18	30.72	82.1	65.3
Cooling element length 7mm+ 2nd hollow tube length 7mm+ 2nd hollow tube inner diameter 4mm	44.89	0.98	3.36	30.16	81.4	65.0

*TPM: According to the total particulate matter Table 1, when the length of the cooling element 331 is 14mm and the case of 7mm compared to the total length of 14mm of the cooling unit 33, the component of the aerosol discharged in both cases and Temperatures have similar values. That is, it can be confirmed that the desired cooling effect can be obtained even if the total length of the cooling unit 33 is 14 mm, the length of the cooling element 331 is 7 mm, and the length of the second hollow tube 332 is 7 mm. have. In addition, it can be seen that even if the inner diameter D2 of the second hollow tube 332 has a larger size than the inner diameter D1 of the first hollow tube 331, it is possible to sufficiently deliver the aerosol component to the user.

Table 2 is a table comparing the components of the aerosol discharged from the aerosol-generating article 3 according to one experimental example. The total length of the cooling unit 33 used in one experimental example is 14 mm, and the inner diameter D1 of the first hollow tube 32 is 3.4 mm. When the cooling part 33 is composed of only the cooling element 331 and when the cooling part 33 is composed of a cooling element 331 having a length of 7 mm and a second hollow tube 332 having a length of 7 mm and an inner diameter (D2) of 3.4 mm. The experiment was performed on.

	Aerosol component (mg)
	TPM	Nicotine	Glycerin	moisture
Cooling element length 14mm	40.43	1.00	3.46	26.39
Cooling element length 7mm+ 2nd hollow tube length 7mm+ 2nd hollow tube inner diameter 3.4mm	40.48	0.94	3.05	26.80

According to Table 2, the case where the cooling unit 33 is composed of only the cooling element 331 and the case of the cooling element 331 of 7mm and the case of the second hollow tube 332 of 7mm in length and 3.4mm in inner diameter (D2) are compared. When done, the components of the aerosol discharged in both cases have similar values. That is, it can be seen that even if the inner diameter D2 of the second hollow tube 332 has the same size as the inner diameter D1 of the first hollow tube 331, it is possible to sufficiently deliver aerosol components to the user. According to Table 2, it can be seen that the cooling effect can be maintained even if the cooling unit 33 does not include only the cooling element 331 and includes the cooling element 331 and the second hollow tube 332. In addition, it can be seen that even if the inner diameter D2 of the second hollow tube 332 is greater than or equal to the inner diameter D1 of the first hollow tube 32, it is possible to sufficiently deliver the aerosol component to the user.

Accordingly, the cooling unit 33 is configured to include the cooling element 331 and the second hollow tube 332, thereby reducing manufacturing cost while maintaining the aerosol component delivery function and cooling function of the aerosol-generating article 3. have.

4 is a view showing another example of the aerosol-generating article.

Referring to FIG. 4, the aerosol-generating article 4 includes a medium portion 41, a first hollow tube 42, a cooling portion 43, and a filter portion 44.

Compared to the aerosol-generating article 3 shown in FIGS. 2 and 3, the aerosol-generating article 4 shown in FIG. 4 has the reverse order in which the cooling elements 431 and the second hollow tube 432 are arranged. . The other configuration is the same as the aerosol-generating article 3 shown in FIGS. 2 and 3.

Table 3 is a table comparing the components and temperatures of the aerosols discharged from the aerosol-generating article 4 according to one experimental example. The total length of the cooling unit 43 used in the experimental examples is 14 mm, and the inner diameter D3 of the first hollow tube 42 is 3.4 mm. When the cooling unit is composed of only cooling elements, the cooling unit 33 is composed of a cooling element 331 having a length of 7 mm and a second hollow tube 332 having a length of 7 mm and an inner diameter (D2) of 4 mm according to the arrangement shown in FIG. 3. , According to the arrangement shown in FIG. 4, an experiment was performed with respect to a case in which the cooling element 431 having a length of 7 mm and a second hollow tube 432 having a length of 7 mm and an inner diameter (D4) of 4 mm were formed.

	Ingredient of aerosol (mg)				Temperature of aerosol (℃)
	TPM	Nicotine	Glycerin	Moisture	Maximum temperature	Average temperature
Cooling element length 14mm	45.08	0.96	3.18	30.72	82.1	65.3
Cooling element length 7mm+ Second hollow tube length 7mm+ Second hollow tube inner diameter 4mm+ Cooling element and second hollow tube arrangement in the sequence shown in FIG. 3	44.89	0.98	3.36	30.16	81.4	65.0
The length of the cooling element 7mm+ the length of the second hollow tube 7mm+ the inner diameter of the second hollow tube 4mm+ The arrangement of the cooling element and the second hollow tube in the sequence shown in FIG. 4	43.37	0.80	2.42	28.63	85.0	65.9

Based on Table 3, as shown in FIG. 3, when the cooling element 331 is disposed on the upstream side and the second hollow tube 332 is disposed on the downstream side (hereinafter, the first case), and illustrated in FIG. 4 As described, the experimental results of the case where the cooling element 431 is disposed on the downstream side and the second hollow tube 432 is disposed on the upstream side (hereinafter the second case) are compared. The amount of nicotine discharged in the second case is 0.80. In mg, the amount of nicotine delivered to the user was reduced by about 18% compared to 0.98 mg, the amount of nicotine released in the first case. In addition, the maximum temperature and the average temperature of the aerosol discharged in the second case were 85.0°C and 65.9°C, which were higher than the maximum temperature of the aerosol discharged in the first case 81.4°C and the average temperature of 65.0°C.

Therefore, compared to the case where the cooling element 431 is disposed downstream and the second hollow tube 432 is disposed upstream, as shown in FIG. 4, the cooling element 331 is as shown in FIG. 3. It can be seen that when placed on the upstream side and the second hollow tube 332 is disposed on the downstream side, a better smoking quality can be provided to the user.

Those of ordinary skill in the art related to the present embodiment will understand that it may be implemented in a modified form without departing from the essential characteristics of the above-described substrate. Therefore, the disclosed methods should be considered in terms of explanation, not limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent range should be construed as being included in the present invention.

Claims (8)

1. Medium section;

   A first hollow tube disposed to face the downstream end of the medium and including a first hollow;

   A cooling unit disposed next to the downstream side of the first hollow tube, the second hollow tube including a second hollow having a diameter equal to or greater than the diameter of the first hollow, and a cooling element;

   A filter unit disposed toward the downstream end of the cooling unit; And

   An aerosol-generating article comprising a wrapper surrounding at least a portion of the medium portion, the first hollow tube, the cooling portion, and the filter portion.
2. According to claim 1,

   The length of the second hollow tube is shorter than the length of the first hollow tube, an aerosol-generating article.
3. According to claim 1,

   The length of the second hollow tube and the length of the cooling element are included within a range of 4 mm to 10 mm, respectively.
4. According to claim 1,

   The cooling element and the second hollow tube are each wrapped by a wrapper,

   The aerosol-generating article, wherein the wrapped cooling element and the second hollow tube are wrapped again by a single wrapper.
5. According to claim 1,

   The cooling element is wrapped by a wrapper,

   The wrapped cooling element and the second hollow tube are wrapped by a single wrapper, an aerosol-generating article.
6. According to claim 1,

   The aerosol-generating article, wherein the first hollow tube and the second hollow tube comprise cellulose acetate.
7. According to claim 1,

   The cooling element comprises a polymer fiber, an aerosol-generating article.
8. According to claim 1,

   The aerosol-generating article, wherein the cooling element and the second hollow tube are sequentially arranged from an upstream side to a downstream side.

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